Three-dimensional reconstruction of intravascular ultrasound images of coronary stents using an ECG-gated pull-back device.
Three-dimensional reconstruction (3D-R) of intravascular ultrasound (IVUS) images is not yet satisfactory because of artifacts caused by cardiac movement. This problem can be overcome with a new device, an electrocardiographic (ECG)-gated pull-back system. Using this device a catheter is pulled back stepwise gated by the ECG, and IVUS dynamic images of an entire cardiac cycle are acquired at each step. We performed 3D-R of IVUS images of stents using this new device in six patients with Palmaz-Schatz coronary stent implantation. We obtained precise 3D images in all cases, and stent structure was visualized in detail. In conclusion, use of an ECG-gated pull-back device enables precise 3D-R of IVUS images and provides useful information on the coronary artery.
Terashima
M
M
Department of Cardiology, Miki City Hospital, Hyogo, Japan.
Hayakawa
M
M
Awano
K
K
Masuda
J
J
Mori
T
T
Emoto
R
R
Hattori
K
K
Inatome
T
T
Maeda
K
K
D000368:Aged; D003331:Coronary Vessels / Q000000981:diagnostic imaging*; D004562:Electrocardiography; D005260:Female; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000379:methods*; D008297:Male; D008875:Middle Aged; D015607:Stents; D018084:Ultrasonography, Interventional / Q000295:instrumentation*